Question

How do I solve for x in this particular problem?

*Pic coming in comments

Answer 1

POP, POP!

Answer 2

would the equation look like : 40=x(2x+2)

Answer 3

correct

Answer 4

I keep getting weird answers like x=-5,4
and my online teacher keeps telling me it is wrong and not explaining. I am not sure what i am doing wrong :/

Answer 5

40=2x^2+2x

Answer 6

subtract 40 on both sides.

2x^2 + 2x -40=0

now factor

Answer 7

x=4,-5

Answer 8

:/

Answer 9

correct.
however, lengths of a line cant be negative,

so x has to be 4

Answer 10

Oh...lol. Well, thank you once again :)

Answer 11

yup. you're welcome again!